Transaction in Own Shares

Caledonia Investments plc

Transaction in own shares

Caledonia Investments plc ("Caledonia") announces that on 20 September 2012 it purchased 20,000 of its own ordinary shares of 5p each at an average price of 1447.10 pence per share. The purchased shares will be cancelled.

Following the above purchase of shares, Caledonia's issued share capital includes 56,841,301 ordinary shares of 5p each with voting rights.

For further information, please contact:

Graeme P Denison

Company Secretary

Caledonia Investments plc

Telephone +44 20 7802 8080

20 September 2012

END